<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<html>
<meta charset="UTF-8">
    <title>Title</title>
</head>

<body>
test.jsp
<%

    //绑定到session
    session.setAttribute("msl", "新属性");
    //从session中移除
    session.removeAttribute("msl");
%>
</body>
</html>
